In this program, we will learn how to make a C++ program of printing the Fibonacci Sequence. We will be learning two ways to make this program.

- Printing Fibonacci Sequence using loop
- Printing Fibonacci Sequence using Recursion

So, Let’s discuss these two ways one by one.

### Printing Fibonacci Sequence using Loop

We will be using the **for** loop here.

Code:

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#include<iostream> using namespace std; int main(){ // enter the number of terms of fibonacci sequence to print int n; cout << "Enter a number: "; cin >> n; // stores the previous value int pre = 0; // stores the current value int cur=1; // loop to print n terms of fibonacci sequence for(int i=1; i<=n; i++){ // prints the current value cout << cur << " "; // stores the current value to temp variable int temp=cur; // changes the current value by adding the prvious value to itself cur = cur + pre; // changes the previous value to temp value pre = temp; } return 0; } |

Output:

1 2 |
Enter a number: 10 1 1 2 3 5 8 13 21 34 55 |

### Printing Fibonacci Sequence using Recursion

Now, we will see how to make this program using **Recursion**.

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#include<iostream> using namespace std; // Recursive function to give fibonacci sequence int fib(int n){ if(n < 2){ return n; }else{ return fib(n-2) + fib(n-1); } } int main(){ // enter the number of terms of fibonacci sequence to print int n; cout << "Enter a number: "; cin >> n; int i=1; while(i<=n){ // Printing the fibonacci sequence cout << fib(i) << " "; i++; } return 0; } |

Output:

1 2 |
Enter a number: 8 1 1 2 3 5 8 13 21 |